Definition
A reserved rent payable in corn (grain) to a religious house by its tenants or farmers. Avercorn was a form of render in kind — a component of a tenant's feudal obligations satisfied by delivering grain rather than money. One account traces the delivery mechanism to the working cattle (averia) of the tenant, who drew the corn directly to the lord's granary, making the term descriptive of both the commodity and the means of carriage.
Why It Matters in Research
Avercorn appears almost exclusively in records associated with ecclesiastical landholding — monastic estates, priory cartularies, and episcopal surveys from medieval England. Researchers working in this period should expect to encounter it in custumals, extents, and rentals where grain renders are enumerated alongside money rents, labor services, and other customary dues. The term rarely survives into post-medieval sources, and by the time early modern lawyers were compiling their dictionaries, it had become a term of art remembered through antiquarian citation rather than active use.
The principal research trap is conflating avercorn with the broader category of cornage or other grain-based renders. Avercorn is specific to religious houses as the recipient; a grain render owed to a lay lord would not carry this label. When the term appears in a manuscript source, it is a reliable signal that the document concerns ecclesiastical estate management.
The competing etymologies recorded by Burrill — ouvre/ouvrage (work) versus avoir (to have or receive) — are not merely of philological interest. The "work cattle" derivation from Somner suggests avercorn was conceptually linked to the tenant's boon-work obligations, performed using their own animals, and thus sat at the intersection of labor service and render in kind. The "avoir" derivation frames it more simply as a receivable. Whichever etymology applies in a given document's context may illuminate the nature of the underlying tenure relationship.
Historical Dictionary Support
Burrill's Law Dictionary is the primary legal dictionary source for avercorn, and it draws entirely on Cowell and Somner — both seventeenth-century antiquarians working from medieval records rather than from any living legal practice. This transmission chain matters: by the time Cowell defined the term in his Interpreter, avercorn was already an archaic curiosity rather than an operative legal concept. Burrill faithfully reproduces both the Cowell definition (rent paid to religious houses by farmers or tenants) and the Somner gloss (corn drawn to the lord's granary by the tenant's working cattle), presenting them as complementary rather than contradictory. Webster's 1913 and general reference sources reproduce the Cowell line without the Somner material, losing the cattle-carriage dimension of the term.
No significant divergence exists across the dictionary sources because the pool of primary authority is so narrow — all roads lead to Cowell and Somner. Researchers should treat any definition of avercorn as ultimately derivative of those two seventeenth-century sources, and should consult original cartulary and extent records for the term in its native context.
Jurisdictional Note
Avercorn is a term of old English law with no identified parallel usage in Scots, Irish, or colonial American legal sources. Research utility is confined to English ecclesiastical and manorial records.